I'd probably throw scientific imaging in the mix, although some
relevant features are only available as 3rd party plugins/scripts.

The old screenshots page was ported over with the old site content:
http://www.gimp.org/screenshots/
I have a few more to add thanks to Alex. Does this page still look ok to
everyone? Are there other screenshots or views that we can (should) add?
Please consider either listing them here, or even better, attaching them!